Custom Webhook File Upload Pipeline

Client problem

A client collected project files through web forms but had no reliable way to route uploads into the correct Drive folders. Staff manually downloaded attachments and re-uploaded them, causing delays and version confusion.

Solution built

Webhook system that receives form data and file attachments, then uploads structured files to Google Drive.

Technologies used

Implementation summary

1. 01 Defined folder structure and naming conventions with the client before implementation.
2. 02 Built an authenticated webhook endpoint to receive multipart form payloads.
3. 03 Integrated Google Drive API for automated upload with metadata tagging.
4. 04 Added validation for file type, size limits, and required fields before processing.
5. 05 Logged each submission with timestamp and status for audit and troubleshooting.

Business outcome

• — Authenticated webhook uploads place files into the agreed Google Drive folder structure.
• — Each submission is logged with timestamp and status for audit.
• — Validation and error responses surface failed uploads instead of dropping them silently.

Deliverables

• Webhook endpoint with authentication
• Google Drive upload integration
• Folder structure and naming documentation
• Submission log and error handling guide